Drainage basins are delineated from 1:24,000-scale (7.5-minute) USGS quadrangles. The delineations have been developed for general purpose use by USGS District staff over the past 20 years. Arc and polygon attributes have been included in the coverage with basin names and ranks of divides, and 14-digit hydrologic unit codes. The New Jersey state boundary as originally defined in the USGS source coverage does not match that used by the NJDEP. Therefore the coverage was edited by the NJ Geological Survey to remove the USGS state boundary and insert the NJDEP state boundary, thus resolving most potential clipping errors.

Note: Some information in this metadata describes the DEPHUC 14 coverage instead of the DEPHUC 11 because DEPHUC 14 is more detailed. Most processes and procedures used are identical for both coverages.

Purpose:

The DEPHUC "14" coverage can be used as a starting point to delineate a study area with a drainage basin boundary. Delineations starting from most major data collection stations and named streams are included. The coverage was edited by the New Jersey Geological Survey to make use of the NJDEP state boundary, in order to preclude errors that might have been caused by the mis-aligned boundaries.

Supplemental_Information:

This data is not field-checked and comes with no guarantees as to its accuracy. The minimum polygon size has not been defined, but the 14-digit hydrologic units have a defined minimum size of 3,000 acres. Some basins are defined smaller than that to allow for a reasonable geographical arrangement of 14-digit sub-watersheds.

The data provided herein are distributed subject to the following conditions and restrictions.

SUBJECT DATA LAYERS

For all data contained herein, NJDEP makes no representations of any kind, including, but not limited to, the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the digital data layers furnished hereunder. NJDEP assumes no responsibility to maintain them in any manner or form.

II. Terms of Agreement

1. Digital data received from the NJDEP are to be used solely for internal purposes in the conduct of daily affairs.

2. The data are provided, as is, without warranty of any kind and the user is responsible for understanding the accuracy limitations of all digital data layers provided herein, as documented in the accompanying cross-reference files (see Section 1.14 CROSS-REFERENCE). Any reproduction or manipulation of the above data must ensure that the coordinate reference system remains intact.

3. Digital data received from the NJDEP may not be reproduced or redistributed for use by anyone without first obtaining written permission from the NJDEP. This clause is not intended to restrict distribution of printed mapped information produced from the digital data.

4. Any maps, publications, reports, or other documents produced as a result of this project that utilize NJDEP digital data will credit the NJDEP's Geographic Information System (GIS) as the source of the data with the following credit/disclaimer:

"This (map/publication/report) was developed using New Jersey Department of Environmental Protection Geographic Information System digital data, but this secondary product has not been verified by NJDEP and is not state-authorized."

5. Users shall require any independent contractor, hired to undertake work that will utilize digital data obtained from the NJDEP, to agree not to use, reproduce, or redistribute NJDEP GIS data for any purpose other than the specified contractual work. All copies of NJDEP GIS data utilized by an independent contractor will be required to be returned to the original user at the close of such contractual work.

Users hereby agree to abide by the use and reproduction conditions specified above and agree to hold any independent contractor to the same terms. By using data provided herein, the user acknowledges that terms and conditions have been read and that the user is bound by these criteria.

Attributes were verified against various sources, including USGS huc14 coverage and NJPDES data.

Logical_Consistency_Report:

The dephuc14 has been reassembled from the USGS HUC14 coverage. The HUC14 hydrologic unit boundaries, not including the state boundary, were delineated by the USGS from 1:24000 scale (7.5 minute) USGS topoquads. This data is not field checked and has no guarantees as to its accuracy. The minimum polygon size has not been defined, but the 14-digit hydrologic units have a defined minimum size of 3000 acres. Some basins are smaller, which gives a reasonable geographic arrangement to the 14 digit sub-watersheds.

Completeness_Report:

The project as originally designed has been completed for the entire state. Also, the New Jersey state boundary as originally defined in the USGS source coverage does not match that used by the NJDEP. Therefore the coverage was edited by the NJ Geological Survey to remove the USGS state boundary and insert the NJDEP state boundary, thus resolving most potential clipping errors.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

NJGS received sub-huc14 basins coverage from USGS-WRD in NAD27 UTM coordinates and began processing into Dephuc14 in NAD83 State Plane Feet coordinates. Projection resulted in a coverage that was shifted about 735 ft SSW in comparison to earlier coverages. The reason for, and origin of this shift is unknown. Therefore, the projected coverage was manually transformed using an affine transformation to best fit the correct line positions based on a comparison to earlier version of the dephuc14 coverage.

U.S. Geological Survey, 1974, Hydrologic unit map-1974, State of New Jersey, 1 sheet.

_______ 1982, A U.S. Geological Survey data standard, codes for the identification of hydrologic units in the United States and the Caribbean outlying areas: U.S. Geological Survey Circular 878A. p. A1- A3.

Source_Scale_Denominator: 24000

Type_of_Source_Media: CD-ROM

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1999

Time_of_Day: unknown

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: USGS HUC14

Source_Contribution: Basis for dephuc14

Process_Step:

Process_Description:

1. USGS Process notes for huc14 coverage:

Hydrologic unit codes were used to tag each drainage basin polygon in the entire state with a 14-digit code. Various subsets of these 14 digits are included in the data set. They are coded in the attribute HUC14, which has pieces of it redefined as HUC4, HUC6, HUC8, and HUC11.

Reassigning of subpolygons of huc14 02040202120060 to 02040202120020, reason consolidation of North Branch of Big Timber Creek

Reassigning of subpolygons of huc14 02040206040010 to 02040206040030, reason consolidation of subbasin

Reassigning of subpolygons of huc14 02040202060020 to 02040202060050, reason consolidation of Black Run

Reassigning of some subpolygons of huc14 02040201030010 to 02040201070030, reason consolidation of Crosswicks Creek

Reassigning of some subpolygons of huc14 02040202160060 to 02040206020010, reason consolidation of Oldmans Creek

Reassigning of some subpolygons of huc14 02030103100010 to create new 02030103100020, all of remaining huc14 polygons in 02030103100 were renumbered, reason consolidation of Masonicus Brook and Mahwah River

Reassigning of subpolygons of huc14 02030103040020 to 02030103120060, reason consolidation of Deepavaal Brook

New hucdiv line digitized for huc14 02030103120010, reason consolidation of Peckman River

Reassigning of subpolygons of huc14 02040105110040 to 02040105120020, reason consolidation of Lopatcong Creek. New arc digitized for delineation.

Reassigning of subpolygons of huc14 02040105110020 to 02040105110030, reason consolidation of Buckhorn Creek.

2. NJGS Processing Notes for Dephuc14

12/22/99 NJGS received sub-huc14 basins coverage from USGS-WRD in NAD27 UTM coordinates and began processing into Dephuc14 in NAD83 State Plane Feet coordinates. Projection resulted in a coverage that was shifted about 735 ft SSW in comparison to earlier coverages. The reason for, and origin of this shift is unknown. Therefore, the projected coverage was manually transformed using an affine transformation to best fit the correct line positions based on a comparison to earlier version of the dephuc14 coverage. The coverage was built as a polygon and line coverage.

12/28/99 The new coverage was edited to delete the USGS version of the NJ State boundary, then equivalent lines from the NJDEP State-boundary reference coverage (stateco) were added in their place. All node errors and label errors were edited, then the coverage was dissolved from a sub-huc14 level to the huc14 level.

12/30/99 The dephuc14 coverage was cleaned, then polygon labels from an earlier version were joined to the PAT in order to preserve NJPDES attributes for unchanged polygons. Watershed Management Area, Water Region, and new HUC codes were edited to reflect the revisions. Repeated PAT items were dropped.

01/03/00 The dephuc14 AAT was edited to add USGS and NJGS field items HUCDIV and LINTYPE respectively. HUCDIV is an item used to represent the HUC4, HUC6, HUC8, HUC11, and HUC14 boundary lines, with the lower HUC values taking precedence over higher values. LINTYPE denotes those lines taken from the NJ State boundary theme (LINTYPE 9).

01/26/00 Arc attributes were manually updated to reflect HUC and LINTYPE values. The coverage was then rebuilt.

02/04/00 Arcs were added and deleted from the coverage based on NJDPES review to correct HUC14 basin delineation.

02/10/00 ARCS were added to coverage based on NJPDES review and USGS agreement to correct HUC14 basin delineation. All HUCDIV arcs items and HUC14 polygon items updated and checked. The set of 212 NAD83 quadrangle tics for the State were added to dephuc14 to replace the set of four tics originally included in the coverage. The dephuc14 coverage was cleaned and duplicated as dephuc14bup.

03/17/00 Created two new HUC14 polygons by adding two new lines based on NJPDES review of proposed changes with the USGS. Recleaned the coverage.

9/11/00 Calculated total drainage area of each subwatershed. This includes area that drains to the subwatershed plus that of the subwatershed. Expressed area in acres and square miles. Added areas to coverage.

Process_Date: 20000327

Process_Step:

Process_Description:

The name of the Watershed Management Area (WMA_NAME) updated to be consistent with the name provided in the DEP coverage DEPWMAS.

Unrepresentable_Domain: See database for assigned watershed identification number

Attribute:

Attribute_Label: WIDE2

Attribute_Definition:

Last two characters of WID used for mapping purposes. The WIDE2 was used when the HUC11 was dissolved from the HUC14 and the "Watersheds of New Jersey" map was constructed. That way the AA, AB, ... BA, etc. letters could be displayed and the WMA number would not be displayed from the WID (i.e., 01AA, 01AB, ...)

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: Based on WID

Attribute:

Attribute_Label: W_NAME

Attribute_Definition: Watershed Name

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: See database for watershed name

Attribute:

Attribute_Label: WMA

Attribute_Definition: Watershed Management Area Number

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: See database for assigned watershed management area number

Attribute:

Attribute_Label: WMA_NAME

Attribute_Definition: Watershed Management Area Name

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: See database for assigned watershed management area name

Attribute:

Attribute_Label: WREGION

Attribute_Definition: Water Region

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: See database for assigned water region

Attribute:

Attribute_Label: WR_NAME

Attribute_Definition: Water Region Name

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: See database for assigned water region name

Attribute:

Attribute_Label: HUC8

Attribute_Definition: Eight digit Hydrologic Unit Code

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: See database for assigned 8 digit value

Attribute:

Attribute_Label: D_WID

Attribute_Definition: Watershed Identification

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: Identification based on Watershed

Attribute:

Attribute_Label: HUC11E3

Attribute_Definition: HUC11E3

Attribute_Definition_Source: NJDEP

Attribute_Domain_Values:

Unrepresentable_Domain: unique

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NJDEP/OIRM/BGIS

Contact_Address:

Address_Type: mailing and physical address

Address: 401 East State Street, First Floor, PO Box 428

City: Trenton

State_or_Province: New Jersey

Postal_Code: 08625-0428

Country: USA

Contact_Voice_Telephone: 609-777-0672

Contact_Facsimile_Telephone: 609-292-7900

Contact_Electronic_Mail_Address: gisnet@dep.state.nj.us

Resource_Description: Downloadable Data

Distribution_Liability:

For all data contained herein, NJDEP makes no representations of any kind, including, but not limited to, the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the digital data layers furnished hereunder. NJDEP assumes no responsibility to maintain them in any manner or form.
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.

The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.